Primer: US Treasury to sell USD 70bln of 5-year notes at 18:00BST/13:00EDT

Primer: This week, the Treasury sold USD 69bln of 2-year notes on August 25th, and will sell USD 70bln of 5-year notes on August 26th and USD 44bln of 7-year notes on August 27th; all to settle August 31st. This is the first set of shorter-dated auctions since the Treasury's buyback announcement last week, where it announced it would increase the size of liquidity-support buybacks in the 10-30-year sector by "at least" double.

The only long-end nominal coupon auction since the buyback announcement was the 20-year offering, which was ultimately soft. The initial richening of the long end following the announcement reduced the yield available heading into the auction and may have weighed on demand. On the other hand, increased Treasury activity in the sector should improve secondary-market liquidity, potentially making long-duration securities more attractive at the margin. Upcoming long-end auctions will therefore be watched for signs of whether the expanded buyback programme is having a more persistent impact on demand.

The 2-year auction following the buyback announcement was well received despite the decline in yields from July. Although the 5-year sector is not subject to the enhanced buybacks, the announcement could still have implications for relative value across the curve. The subsequent bull flattening has seen the 5s30s spread narrow to around 80bps from roughly 95bps before the announcement, reducing the additional yield available from extending into the long end; a similar 15bps narrowing has also been seen in 2s30s. Conversely, the 5-year yield itself trades below that seen at the July offering, reducing its attractiveness on an outright yield basis.

The 5-year yield currently trades around 4.355%, below the previous auction's 4.408% high yield. Similar to the 2-year, this marks the first offering since April where the yield available ahead of the auction is below the previous auction's stop. The April offering was ultimately mixed, although that came against a different market backdrop, including reduced volatility following the sharp moves surrounding the onset of the US-Iran conflict in March.

The MOVE Index currently trades around 72, below the roughly 77 level seen at the time of the previous auction. Meanwhile, July's 5-year auction was soft, tailing the WI by 0.9bps as indirect participation declined, although direct demand improved. The auction in July also followed a strong 2-year offering earlier in the session, which may have reduced some of the concession available heading into the 5-year sale.

Overall, the lower outright yield relative to July could weigh on demand at today's auction, although the recent flattening of the curve has altered the relative-value proposition across maturities, potentially making the 5-year more attractive given the reduced yield pickup from extending further out the curve. Volatility is also slightly lower, but the previous auction was soft despite offering a higher outright yield, albeit it followed a strong 2-year auction earlier that session. Yesterday's solid 2-year auction suggests demand has so far held up despite the recent richening in shorter-dated Treasuries. The Treasury's enhanced buyback programme remains concentrated further out the curve, meaning today's auction should provide another indication of whether the recent changes in long-end Treasury policy are having any meaningful spillover into demand for belly supply.

Auction History

US 5-YEAR NOTE RECENT AUCTION HISTORY:

High Yield: (prev. 4.408%, six-auction avg. 4.057%)
Tail: (prev. 0.9bps, six-auction avg. 0.7bps)
Bid-to-Cover: (prev. 2.28x, six-auction avg. 2.32x)
Dealers: (prev. 13.5%, six-auction avg. 13.4%)
Directs: (prev. 27.2%, six-auction avg. 21.2%)
Indirects: (prev. 59.2%, six-auction avg. 65.4%)

US 7-YEAR NOTE RECENT AUCTION HISTORY:

High Yield: (prev. 4.473%, six-auction avg. 4.207%)
Tail: (prev. 0.2bps, six-auction avg. 0.2bps)
Bid-to-Cover: (prev. 2.49x, six-auction avg. 2.49x)
Dealers: (prev. 13.0%, six-auction avg. 11.8%)
Directs: (prev. 16.9%, six-auction avg. 23.1%)
Indirects: (prev. 70.1%, six-auction avg. 65.1%)

Monthly 5-year offerings in the belly of the curve tend to trade on concession mechanics rather than macro signal: the pattern is that auctions arriving with yields below the prior stop see demand hinge on whether the richening was buyer-driven or merely a by-product of moves elsewhere on the curve. Today's setup is the latter case in part, with the recent bull flattening driven by the long end after Treasury's announcement of expanded liquidity-support buybacks concentrated in the 10-30-year sector, a sector the 5-year does not touch directly. That makes the auction a test of spillover: whether improved long-end liquidity expectations compress relative value across the curve or leave belly supply to clear on its own merits. The 5s30s narrowing reduces the pickup from extending duration, which at the margin flatters the 5-year on relative value even as the outright yield sits below the July stop, and the prior episode where a 5-year was offered below the previous stop produced a mixed result under a different volatility backdrop. The tells are the usual ones: the WI tail or stop-through at 13:00EDT, the indirect bid after its decline last month, and whether a strong 2-year the prior day again strips concession out of the belly, which was the cited explanation for July's soft result. The 7-year tomorrow completes the week and, sitting closer to the buyback footprint, is the cleaner read on whether the programme is shifting demand durably.